Txhua hom vitamin A muaj beta-ionone lub nplhaib uas txuas nrog isoprenoid saw, hu ua pawg retinyl. Ob qho tib si cov yam ntxwv yog qhov tseem ceeb rau kev ua vitamin.
Yuav ua li cas hom ionone siv rau hauv kev sib txuas ntawm vitamin A?
Vitamin A (Retinoids)
Carotenoids nrog tsawg kawg ib β-ionone nplhaib, tshwj xeeb tshaj yog β-carotene, muab cov retinoid precursors nyob rau hauv feem ntau cov khoom noj.
Dab tsi yog cov ntsiab lus hauv vitamin A?
Vitamin A yog ib pawg ntawm cov khoom noj tsis txaus noj zaub mov uas muaj xws li retinol, retinal, thiab ntau yam provitamin A carotenoids (feem ntau yog beta-carotene). Vitamin A muaj ntau yam haujlwm: nws yog ib qho tseem ceeb rau kev loj hlob thiab kev loj hlob, kev saib xyuas ntawm lub cev tiv thaiv kab mob, thiab kev pom kev zoo.
YPuas yog vitamin A beta-carotene?
Eye He alth
Beta carotene yog ib qho provitamin A carotenoid, los yog cov khoom noj uas lub cev hloov mus rau hauv vitamin A. Kev tshawb fawb pom tias noj carotenoid- Kev noj zaub mov nplua nuj, suav nrog beta carotene, txhawb kev noj qab haus huv ntawm qhov muag thiab tiv thaiv kab mob qhov muag.
Ionone yog dab tsi?
Ionone thiab methylionone, ua los ntawm citral, yog siv rau hauv tshuaj tsw qab; ionone kuj hloov mus ua hluavtaws vitamin A.
